Hot Water Maintenance
Hot Water System Installation

Hot Water System Installation Across Sydney & Wollongong

Professional hot water system installation for new homes, renovations, granny flats, strata buildings and commercial properties across Sydney and Wollongong. Hot Water Maintenance supplies and installs electric, gas, solar and heat pump systems — with upfront fixed pricing, zero call out fee and a no fix, no pay guarantee on all work.

  • 4.9 on Google
  • 20+ Years Experience
  • Zero Call-Out Fee
Hot Water System Installation

Installing A New Hot Water System? We Can Help.

HWM technician installing a new hot water system

Whether you’re building a new home, adding a granny flat, renovating a bathroom, fitting out a commercial property or installing a hot water system where there wasn’t one before, getting the right system correctly sized and properly installed from the start saves time, money and frustration down the track.

The wrong system size leads to either running out of hot water or wasting energy heating water that isn’t used. The wrong system type for a property’s energy connection, roof space or available area creates ongoing problems. And a poor installation means callbacks, warranty issues and early system failures.

Hot Water Maintenance installs electric, gas, solar and heat pump hot water systems across Sydney and Wollongong for homeowners, builders, developers, landlords, strata properties and businesses. We advise on the right system before the job starts — and we complete installations cleanly, correctly and to the manufacturer’s specifications.

New Home Builds
Hot water installation is one of the final stages of a new home build. The right system depends on the energy connections available, the number of bedrooms and occupants, the location of bathrooms and the builder’s specifications. We work directly with homeowners and builders to supply and install the correctly specified system.
Granny Flats And Secondary Dwellings
Granny flats and dual occupancy properties need their own dedicated hot water supply. The right system depends on available space, energy connection and whether the dwelling shares utilities with the main property. We regularly install compact and efficient systems for secondary dwellings across Sydney and Wollongong.
Home Renovations And Extensions
Adding a bathroom, extending a home or relocating a laundry often requires upgrading or repositioning the hot water system. Older systems that have been adequate for years may not cope with additional demand once a renovation is complete. We advise on system sizing and install to the new configuration.
Switching System Type
Upgrading from an old electric storage system to a heat pump, moving from gas storage to continuous flow, or adding solar hot water to an existing property all require a full installation rather than a simple swap. We handle the full job including any required electrical or gas work coordination.
Strata Buildings And Multi-Dwelling Properties
New strata developments, apartment buildings and multi-dwelling properties often require multiple systems, centralised hot water infrastructure or systems designed for high-demand, high-occupancy environments. We install across all multi-dwelling configurations and work with strata managers, developers and body corporates.
Commercial And Business Properties
Cafes, restaurants, offices, medical centres, gyms and other commercial properties have specific hot water demand requirements that differ from residential. We install commercial-grade systems correctly specified for the type of business and usage pattern.
Installation Options

Hot Water Systems We Supply & Install

We install all major hot water system types across Sydney and Wollongong. The right choice depends on your property’s energy connections, available space, household size and long-term running cost priorities. Our technicians explain the options clearly so you can make an informed decision before any work begins.
Electric Hot Water Systems
For new installations, system upgrades and replacements. Suitable for properties without gas, compatible with off-peak tariffs and rooftop solar. Available in a range of tank sizes to suit most households.
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Gas & Continuous Flow Hot Water Systems
For gas storage and continuous flow installations. Continuous flow units heat water on demand with no storage tank required — ideal for high-demand homes, renovations and properties with limited space.
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Solar Hot Water Systems
For new solar hot water installations with roof-mounted collectors and gas or electric booster. Best suited to properties with north-facing roof space and high daily hot water usage.
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Heat Pump Hot Water Systems
For new heat pump installations and upgrades from older electric systems. Qualify for NSW Energy Savings Scheme rebates and federal STCs. Require adequate outdoor space and ventilation.
Learn more

We supply and install Rheem, Rinnai, Dux, Bosch, Aquamax, Vulcan, Thermann and other leading brands. If you’re unsure which system suits your property, our technicians can advise before you commit to anything.

HWM service van stocked with parts for same-day repairs

Most emergency repairs are completed in a single visit. Our vans carry the most common parts for all major brands, so you are not waiting days for a part to be ordered.

Energy Connection
If your property has gas connected, a gas storage or continuous flow system is often the most cost-effective long-term option. If gas is not available or you prefer to avoid it, a heat pump system offers significantly lower running costs than standard electric and is the preferred upgrade choice for most new installations where space allows.
System Capacity And Household Size
An undersized system runs out of hot water; an oversized one wastes energy. As a general guide, a household of 1–2 people typically requires 125–160 litres of storage capacity, 3–4 people require 160–250 litres, and larger households or properties with high usage need 315 litres or more. Continuous flow systems remove this constraint entirely by heating water on demand.
Available Space
Storage systems require space for the tank. Heat pump systems require additional outdoor clearance for airflow. Solar systems require suitable roof space. Continuous flow systems have a compact wall-mounted profile and suit properties where space is limited. We assess the available space before recommending a system.
Upfront Cost Versus Long-Term Running Costs
Electric storage systems have the lowest upfront installation cost but the highest ongoing running costs. Heat pump systems cost more upfront but running costs are typically 60–70% lower than standard electric — and with current NSW rebates and STCs, the effective upfront cost gap is considerably smaller than the list price suggests. We help you understand the full cost picture before deciding.
Available Rebates And Incentives
Heat pump hot water systems currently qualify for NSW Energy Savings Scheme rebates and federal Small-scale Technology Certificates (STCs). Solar hot water systems also qualify for STCs. These rebates can meaningfully reduce the upfront cost of more efficient systems. We explain what applies to your installation before the job starts.
Simple Process

How Our Hot Water Installation Service Works

Call Us Now

Tell our team about the property, the installation scenario and any preferences you have around system type or brand. If it’s for a renovation or new build, having the floor plan or builder’s specifications ready is helpful.

We Assess The Property And Advise

A technician assesses the property, reviews the energy connections, available space and household demand, and explains the most suitable system options with upfront fixed pricing for each. No pressure, no upselling — just practical recommendations based on your property.

We Supply And Install

Once you’ve chosen a system, we supply the unit and complete the full installation to the manufacturer’s specifications and all relevant Australian Standards. We handle everything — supply, installation, any required connections and site clean-up.

We Commission And Confirm

Once installed, we commission the system, confirm it’s operating correctly and walk you through the basics of the unit — including how to adjust temperature settings, what to do if a fault occurs and what maintenance to schedule going forward.

Why Choose Us

Why Locals Choose Hot Water Maintenance For System Installation

Getting a hot water system installation right the first time matters. A poorly sized or incorrectly installed system causes problems for years. For more than 20 years, Hot Water Maintenance has installed hot water systems for homeowners, builders, landlords, strata managers and businesses across Sydney and Wollongong — always with clear advice, proper specification and quality workmanship.

Experienced Hot Water Specialists

Hot water is all we do. Our team has installed every major system type across residential, strata and commercial properties and understands the specific requirements of each scenario.

Right System, Right Size, First Time

We advise on system selection before the installation starts. Getting the capacity, type and position right from the beginning saves costly modifications later.

Upfront Fixed Pricing

You receive clear pricing for supply and installation before any work begins. What we quote is what you pay.

Full Job, Fully Managed

We handle the complete installation — supply, installation, commissioning and site clean-up. You don’t need to source the system separately or coordinate multiple trades.

Zero Call Out Fee

Get installation advice and a site assessment without hidden attendance charges.

Trusted By Homeowners, Builders & Property Managers

We regularly work with homeowners, residential builders, developers, landlords and strata managers across Sydney and Wollongong. Our installations are completed to the standards builders and developers expect.

Brands

Hot Water Brands We Supply & Install

We supply and install hot water systems from all major brands across Sydney and Wollongong, including electric, gas, solar, heat pump and continuous flow systems.

Our technicians regularly work with Rheem, Rinnai, Dux, Bosch, Aquamax, Vulcan, Thermann and other leading brands. If you have a preferred brand or your builder has specified a particular unit, we can advise on availability and suitability for your property.

Aquamax
Bosch
Dux
Rheem
Rinnai
Stiebel Eltron
Thermann
Vulcan
Local Service Areas

Hot Water System Installation Across Sydney & Wollongong

Our core local service area for emergency hot water repairs, system replacements, installations and servicing. We regularly help homeowners, landlords, strata properties and local businesses across Caringbah, Cronulla, Miranda, Sutherland, Gymea, Engadine, Taren Point, Sylvania and surrounding Sutherland Shire suburbs.

Alfords PointBangorBarden RidgeBonnet BayBundeenaBurraneerCaringbahCaringbah SouthComoCronullaDolans BayEngadineGrays PointGreenhills BeachGymeaGymea BayHeathcoteIllawongJannaliKangaroo PointKareelaKirraweeKurnellLilli PilliLoftusLucas HeightsMaianbarMenaiMirandaOyster BayPort HackingSandy PointSutherlandSylvaniaSylvania WatersTaren PointWaterfallWooloowareWoronoraWoronora HeightsYarrawarrahYowie Bay

Call to confirm coverage for your area. We're expanding our service zones regularly.

Don't Take Our Word For It

What Our Customers Say

Our customers trust us for clear advice, quality installations and clean workmanship — whether it’s a new build, a renovation upgrade or a granny flat installation.
SM

Sarah M.

2 weeks ago

Called at 7am with no hot water and Kris was at my house by 9:30. Had it fixed within an hour. Honest, fast, and didn't charge me the earth. Highly recommend.

D&

Dave & Tracey R.

1 month ago

Our hot water system died on a Sunday. No call-out fee. They came out, assessed it, and installed a new system the same day. Absolute legends.

MT

Michael T.

1 month ago

Brent came out and immediately knew what was wrong — a faulty thermostat. Explained everything clearly, gave me options, and fixed it on the spot. Five stars all day.

JK

Jenny K.

2 months ago

I've used HWM twice now and they're just brilliant. Upfront pricing, tidy workmanship, and really friendly. The heat pump has cut our electricity bill significantly.

FAQ

Frequently Asked Questions

Need A Hot Water System Installed?

Whether you’re building a new home, completing a renovation, fitting out a granny flat or upgrading a commercial property, Hot Water Maintenance can advise on the right system and complete the installation properly. Get upfront fixed pricing, honest advice and quality workmanship from a local hot water specialist with over 20 years of experience across Sydney and Wollongong.
4.9 Google reviews
Trusted by localsfor 20+ years
10,000+ homesserved across Sydney